Make a story to explain how blood travels around the body. I have to include the circulatory system and the respiratory system
Answers
In human beings, there is a phenomenon called double circulation that occurs, which is an efficient way. The heart pumps the blood, and through the various blood vessels, it travels to different organs and then comes back again to the heart. Now, this flow of blood in humans occurs in two pathways called the pulmonary pathway and the systemic pathway.
This system ensures that the deoxygenated blood (blood carrying carbon dioxide) from the right side of the heart goes to the lungs, where gaseous exchange occurs. Blood gets filled with oxygen from the lungs and carbon dioxide is given out to the lungs(from where it leaves the body). The oxygenated blood then travels from the left side of the heart to all other parts of the body.
The double circulation seen here ensures that there is no mixing of oxygenated blood and deoxygenated blood. There is also an efficient supply of oxygen to the body cells and a greater rate of blood flow in the body.